Polly Toynbee, Martin Kettle and the SNP's chief whip Stewart Hosie discuss the plans for a referendum on Scottish independence; welfare reform; and the portrayal of Margaret Thatcher in new film The Iron Lady

Britain rejects the AV system as nationalists secure Holyrood's first ever majority and the Lib Dems come off worst in local and devolved elections. Analysis and commentary from our experts around the UK